Cyclic amidines useful as catalysts in the hardening of epoxide resins

US4698426A · kind A · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Rolf-Volker Meyer · Krefeld, DE
• Hans-Joachim Kreuder · Krefeld, DE
• Erwin Hohl · Krefeld, DE

Key dates

• Filing date: Feb 7, 1985
• Grant date: Oct 6, 1987
• Expiry date: Feb 7, 2005

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08G59/686
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

Cyclic amidines which are modified by the incorporation of additional polar groups, may be used as catalysts for hardening heat-curable resin compositions comprising polyepoxides and optionally carboxyl group-containing polymers. Such amidine catalysts yield a high reactivity, an excellent storage stability and result in elastic coatings which show a high gloss and a good resistance to solvents.